3NB3

The host outer membrane proteins OmpA and OmpC are packed at specific sites in the Shigella phage Sf6 virion as structural components


ELECTRON MICROSCOPY
Sample
bacteriophage Sf6
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentHOMEMADE PLUNGER
Cryogen NameETHANE
Sample Vitrification DetailsVitrification was carried out with a standard cryoEM method. The sample of 4 microlitres was applied to a holey EM grid, blotted for 3-4 seconds with ...Vitrification was carried out with a standard cryoEM method. The sample of 4 microlitres was applied to a holey EM grid, blotted for 3-4 seconds with a Whatman #2 filter paper, and plunged into ethane slush incubated in liquid nitrogen. The grid was stored in liquid nitrogen.
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles3232
Reported Resolution (Å)19
Resolution Method
Other DetailsThe initial model was the cryoEM map of the related phage P22.
Refinement Type
Symmetry TypePOINT
Point SymmetryI
Map-Model Fitting and Refinement
Id1 (1QJP, 2J1N)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsMETHOD--manual fitting in O coupled with local optimization with UCSF Chimera REFINEMENT PROTOCOL--rigid body
Data Acquisition
Detector TypeGENERIC CCD (2k x 2k)
Electron Dose (electrons/Å**2)20
Imaging Experiment1
Date of Experiment2008-07-18
Temperature (Kelvin)89
Microscope ModelFEI TECNAI F20
Minimum Defocus (nm)1060
Maximum Defocus (nm)471
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS4
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification39000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
none